ATI RN
Cardiovascular System Exam Questions
1. This is a test that measures the oxygen saturation level in the blood, often used to assess respiratory function.
- A. Pulse oximetry
- B. Spirometry
- C. Arterial blood gas (ABG)
- D. Lung function test
Correct answer: A
Rationale: The correct answer is A, Pulse oximetry. Pulse oximetry is a non-invasive test that measures the oxygen saturation level in the blood, helping to assess respiratory and cardiovascular function. Choice B, Spirometry, measures lung function by assessing airflow and volume. Choice C, Arterial blood gas (ABG), evaluates the acidity, oxygen, and carbon dioxide levels in the blood. Choice D, Lung function test, is a broad term that may include various tests to assess lung health, but specifically measuring oxygen saturation is done through pulse oximetry.
2. The client on warfarin has an INR of 3.8. What is the most appropriate action by the nurse?
- A. Administer vitamin K.
- B. Hold the next dose of warfarin.
- C. Increase the dose of warfarin.
- D. Notify the healthcare provider immediately.
Correct answer: A
Rationale: An INR of 3.8 is elevated, indicating an increased risk of bleeding. Administering vitamin K can help reverse the effects of warfarin. Holding the next dose of warfarin would be appropriate if the INR was too high, but not as the first-line action. Increasing the dose of warfarin would worsen the situation by further increasing the INR. Notifying the healthcare provider is important, but immediate action to address the elevated INR is necessary.
3. A client taking haloperidol is exhibiting extrapyramidal symptoms. Which intervention should the nurse anticipate?
- A. Increase the dose of haloperidol.
- B. Administer benztropine.
- C. Administer naloxone.
- D. Monitor blood pressure before administering the next dose.
Correct answer: B
Rationale: The correct intervention for a client exhibiting extrapyramidal symptoms while taking haloperidol is to administer benztropine. Benztropine is an anticholinergic medication commonly used to manage extrapyramidal symptoms caused by antipsychotic medications like haloperidol. Increasing the dose of haloperidol (Choice A) would exacerbate the symptoms rather than alleviate them. Administering naloxone (Choice C) is not indicated for extrapyramidal symptoms. Monitoring blood pressure (Choice D) is important but not the primary intervention for managing extrapyramidal symptoms.
4. A client is administering insulin. Which statement by the client shows proper understanding of insulin administration?
- A. I will inject insulin into my thigh before exercise
- B. I will skip meals to lower blood sugar
- C. I will store my insulin in the freezer
- D. I will rotate injection sites for insulin administration
Correct answer: D
Rationale: The correct answer is D because rotating injection sites prevents tissue damage and ensures better absorption of insulin. Option A is incorrect as injecting insulin into the thigh before exercise can lead to hypoglycemia. Option B is incorrect as skipping meals can cause blood sugar levels to drop dangerously low. Option C is incorrect as insulin should not be stored in the freezer as it can alter its effectiveness.
5. Each statement is true of fat-soluble vitamins, except one. Which is the exception?
- A. Fairly stable to heat, such as during cooking
- B. Contain carbon
- C. Stored in the pancreas
- D. Absorbed in the intestine along with fats and lipids in food
Correct answer: C
Rationale: Fat-soluble vitamins are not stored in the pancreas; they are stored in the liver and fatty tissues. Choice A is correct as fat-soluble vitamins are fairly stable to heat. Choice B is also correct as fat-soluble vitamins contain carbon. Choice D is correct as fat-soluble vitamins are absorbed in the intestine along with fats and lipids in food.
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